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Submitted: 13 Jul 2014
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Health Promot Perspect. 2014;4(1): 82-89.
doi: 10.5681/hpp.2014.011
PMID: 25097841
PMCID: PMC4122034
  Abstract View: 717
  PDF Download: 657

Original Research

Psychometric Properties of the Persian Language Version of the System Usability Scale

Iman Dianat, Zahra Ghanbari, Mohammad AsghariJafarabadi *

Abstract

Background: The System Usability Scale (SUS) is a widely used self–administered instrument for evaluating the usability of a wide range of products and services. The aims of this descriptive-methodological study were to develop and investigate the psychometric properties of the Iranian version of the SUS. Methods: The study was conducted among 202 university students from the Tabriz University of Medical Sciences, Iran. Content validity was evaluated by a panel of 10 experts. Construct validity was assessed by exploratory and confirmatory factor analyses. The internal consistency and test-retest reliability were assessed by Cronbach’s alpha and Intraclass Correlation Coefficient (ICC), respectively. Additionally the feasibility of the measure was judged by ceiling and floor effect. Results: Content validity of the short form of Iranian SUS was established. Factor analyses supported the conceptual uni-dimensionality, and thus confirmed the construct validity of the measure. The internal consistency (α = 0.79) and test retest reliability (ICC = 0.96) were both approved and there was also no ceiling nor floor effect. Conclusions: The findings support the use of SUS for both practical and research settings in Iranian population.
Keywords: Ergonomics, Validity, Reliability, System usability scale, Iran
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Abstract View: 717

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PDF Download: 657

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